The arithmetic mean of a set of data which contains 7 number is 81. If the cutting data of 1 enables the average of the rest of series 78. You shall find that data has been eliminated to have much value.
The arithmetic mean of the data set, which contains 7 of the 81 cuts the output to 1 if the average of the data set. 78 Determine whether the data is cut out to have much value.
The arithmetic average of the data sets, one of which contains information 7 number is 81 if you cut the output to 1 amount. The mean of this data set have 78 , find out information that was cut off in the much.